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A sheriff's deputy waits for his partners as they prepare to leave the command post at Bear Mountain Resort at start of day four in the search for fugitive ex-cop Christopher Dorner in Big Bear on Sunday, Feb. 10, 2013. (Rachel Luna / Staff Photographer)

Sheriff's deputies complete their shift and return to the command post at Bear Mountain Resort at start of day four in the search for fugitive ex-cop Christopher Dorner in Big Bear on Sunday, Feb. 10, 2013. (Rachel Luna / Staff Photographer)

A sheriff's deputies pack up and prepare to leave the command post at Bear Mountain Resort at start of day four in the search for fugitive ex-cop Christopher Dorner in Big Bear on Sunday, Feb. 10, 2013. (Rachel Luna / Staff Photographer)

A sheriff's deputy leaves the command post at Bear Mountain Resort at start of day four in the search for fugitive ex-cop Christopher Dorner in Big Bear on Sunday, Feb. 10, 2013. (Rachel Luna / Staff Photographer)

A patrol vehicle returns to the command post near Bear Mountain Resort at the start of day four in the search for fugitive ex-cop Christopher Dorner in Big Bear on Sunday, Feb. 10, 2013. (Rachel Luna / Staff Photographer)

A view of Big Bear Sheriff's Station during day four of the search for fugitive ex-cop Christopher Dorner continues in Big Bear on Sunday, Feb. 10, 2013. (Rachel Luna / Staff Photographer)

A sign placed on front door at the Big Bear Sheriff's Station directs authorities to check in at the command post near Bear Mountain Resort as day four of the search for fugitive ex-cop Christopher Dorner continues in Big Bear on Sunday, Feb. 10, 2013. (Rachel Luna / Staff Photographer)

Rod Guzman, 25, of San Clemente, makes his way towards the Bear Mountain slopes while one lone law enforcement vehicle remains in parking lot that once housed the command post for the Christopher Dorner manhunt in Big Bear on Sunday, Feb. 10, 2013. Search crews were reduced 25 personnel on Sunday from 50 the day before, and the parking lot was reopened to skiers and snowboarders.(Rachel Luna / Staff Photographer)

A view of Big Bear Lake during day four of the search for fugitive ex-cop Christopher Dorner in Big Bear on Sunday, Feb. 10, 2013. (Rachel Luna / Staff Photographer)

(Rachel Luna / Staff Photographer)

A parking lot that once housed the command post for the Christopher Dorner manhunt is reopened to skiers and snowboards in Big Bear on Sunday, Feb. 10, 2013. Search crews were reduced 25 personnel on Sunday from 50 the day before. (Rachel Luna / Staff Photographer)

A view of Big Bear Lake during day four of the search for fugitive ex-cop Christopher Dorner in Big Bear on Sunday, Feb. 10, 2013. (Rachel Luna / Staff Photographer)

A police officer and his bloodhound search dog take break from the Christopher Dorner manhunt to let eight-year-old local resident Derek Ybarra visit with them at the command post near Bear Mountain Resort in Big Bear on Saturday, Feb. 9, 2013. The manhunt continued Saturday for Dorner, who still remains at large. (Rachel Luna / Staff Photographer)

Snowcats get haul away from the Bear Mountain command post to be relocated to the Big Bear Sheriff's Station at the close of day three in the search for fugitive ex-cop Christopher Dorner in Big Bear on Saturday, Feb. 9, 2013. Approximately 50 officers continued the search for Dorner Saturday. (Rachel Luna / Staff Photographer)

The ariel search for Christopher Dorner resumes on day three of the search for fugitive ex-cop in Big Bear on Saturday, Feb. 9, 2013. Approximately 50 officers continued the search for Dorner Saturday. (Rachel Luna / Staff Photographer)

Search team at the command post near Bear Mountain Resort prepare to head out in snowcats as the search for fugitive ex-cop Christopher Dorner continues in Big Bear on Saturday, Feb. 9, 2013. Approximately 50 officers continued the search for Dorner Saturday. (Rachel Luna / Staff Photographer)

Television media stakes out at the Big Bear Sheriff's Station during day four of the search for fugitive ex-cop Christopher Dorner continues in Big Bear on Sunday, Feb. 10, 2013. (Rachel Luna / Staff Photographer)

Sheriff's deputies from neighboring stations fit their patrol vehicle with snow chains as they prepare to leave the command post at Bear Mountain Resort at the closing of the third day in the search for fugitive ex-cop Christopher Dorner in Big Bear on Saturday, Feb. 9, 2013. Approximately 50 officers continued the search for Dorner Saturday. (Rachel Luna / Staff Photographer)

The ariel search for Christopher Dorner resumes on day three of the search for fugitive ex-cop in Big Bear on Saturday, Feb. 9, 2013. Approximately 50 officers continued the search for Dorner Saturday. (Rachel Luna / Staff Photographer)

Snowcats get haul away from the Bear Mountain command post to be relocated to the Big Bear Sheriff's Station at the close of day three in the search for fugitive ex-cop Christopher Dorner in Big Bear on Saturday, Feb. 9, 2013. Approximately 50 officers continued the search for Dorner Saturday. (Rachel Luna / Staff Photographer)

Authorities regroup in front of their command post near Bear Mountain Resort as the continue the search for fugitive ex-cop Christopher Dorner in Big Bear on Saturday, Feb. 9, 2013. Approximately 50 officers continued the search for Dorner Saturday. (Rachel Luna / Staff Photographer)

Photos: Dorner Manhunt Day 4

Day four of the search for accused killer and ex-LAPD officer Christopher Dorner is gearing up to resume Sunday in the Big Bear area. San Bernardino County Sheriff's authorities moved the command post which for the last three days had been at the Bear Mountain Ski resort to the Big Bear sheriff's station. A scaled-down search effort continued with 50 officers, including SWAT team members combing the wooded area behind the resort where Dorner's burned out truck was discovered Thursday, according to sheriff's officials.